Seal Extension 
Seal extension is an enhancement to certification. Seal extension is used for certifying devices that have lost their calibration validity. A device might require seal extension due to a destroyed seal or as part of periodic replacement or company inspection. Unlike certification, this function requires you to enter a seal date, a certification type, and seal code.
You can certify devices at any time. There are no prerequisites for certification.
Seal extension is carried out based on the certification year and seal date of the device. You can restrict the seal extension to devices of a certain device category. You can specify whether only installed devices or only removed devices are to be certified.
The following restrictions apply to the certification year:
Seal extension can be carried out for the current year (system year) and previous years. You can only certify devices for the following year (system + 1) after September 30 of the current year.
Example
Seal extension date: 09/30/1998 or 10/01/1998
Certification years permitted: 1998 and earlier or 1999 and earlier
Subsequently, by specifying the device serial number, you can enter all devices to be certified in the table. If a device belongs to a device group, the rest of the devices of the device group can be included in the table automatically. For each device, you specify certification number, a certification type and a seal code. You have the option of entering a certification number.
You can also enter the readings of all registers of the devices to be certified. Note that the meter readings you specify do not undergo a validation.